/Engine/Source/Runtime/Engine/Public/Elements/SMInstance/SMInstanceElementPrimitiveCustomDataInterface.h
virtual void SetCustomData ( const [FTypedElementHandle](API\Runtime\TypedElementFramework\Elements\Framework\FTypedElementHandle) & InElementHandle, [TArrayView](API\Runtime\Core\Containers\TArrayView)< const float > CustomDataFloats, bool bMarkRenderStateDirty )